Epilepsy and Autism: Is There a Relationship?

Epilepsy News From: Tuesday, March 21, 2017

What is Epilepsy?

  • Seizures: abnormal electrical firing from the brain
  • Epilepsy: recurrent seizures
  • Approximately 1-2% of children are diagnosed with epilepsy

What is Autism Spectrum Disorders?

  • Autism Spectrum Disorders (ASD): developmental dysfunction involving social, speech, cognition and behavioral disabilities
  • About 0.1% of children have ASD worldwide
  • In the United States, about 1.5% of children have ASD

Is there a connection?

  • Yes, there is an association between epilepsy and autism.
  • Children with autism are (a little) more likely to have epilepsy.
  • Children with epilepsy are (a little) more likely to have autism.
  • Seizures are the most common neurologic complication in ASD.

Do all children with autism have seizures?

  • No. Not all autistic children will develop seizures. In fact, only a minority will.
  • Similarly, not all children with epilepsy will have autism. Only a small minority.
  • Approximately a third of the autistic spectrum also have epilepsy.

Are some people with ASD more prone to seizures than others?

  • Yes, some genetic disorders are associated with both seizures and autism, including Rett’s, Fragile X, Angelman, Prader-Willi and many other syndromes.
  • Children with characteristics that suggest these disorders should undergo genetic testing.

Is there a specific type of seizure associated with ASD?

Are seizures in people with ASD more severe?

  • Generally no, but it is variable.
  • Some seizures are easily controlled and others are intractable.
  • There is higher mortality and morbidity (rate of disease) associated with seizures in ASD.

What should parents look for?

  • It may be difficult to recognize seizure activity in ASD, because of the communication barriers and overlap of symptoms with frequent abnormal behaviors.
  • For example, repetitive purposeless behaviors of autism can resemble automatisms seen in seizures.
  • Cognitive delay, impaired social interactions, and aggressive and irritable behavior seen in children with epilepsy can also be seen with ASD, thus it is difficult to discern the cause.
  • Red flags to note for seizures:

What can be done?

Epilepsy associated with ASD does not change the evaluation or management of seizures.

Authored by

Tasleema Khan MD, University of South Florida, Tampa

Reviewed by

Selim Benbadis MD

Reviewed Date

Tuesday, March 21, 2017

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